:root{color-scheme:light;--background:#f4f9ff;--text:#354f76;--muted:#627a9d;--accent:#6497d4;--line:#cddff2;--page-art:url('../assets/ice-garden.webp');font-family:'Songbook Rounded','Microsoft YaHei',sans-serif;font-synthesis:none;color:var(--text);background:var(--background)}
*{box-sizing:border-box}body{margin:0;min-width:280px}button,input,select,textarea{font:inherit;color:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default;opacity:.5}a{color:inherit;text-decoration:none}button{border:0}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #5b8ec7;outline-offset:4px}[hidden]{display:none!important}.icon-library{position:absolute;width:0;height:0;overflow:hidden}.icon{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}.sr-only{position:absolute;width:1px;height:1px;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.hero{position:relative;isolation:isolate}#particles{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:2}.hero-inner{max-width:1200px;margin:auto;min-height:510px;display:grid;grid-template-columns:1.12fr 1fr;align-items:center;gap:24px;padding:20px 32px 14px}.hero-copy{position:relative;z-index:3;padding:0 0 10px 10px}.title-star{display:block;font-size:30px;color:#86addc;margin:0 0 17px 42px;line-height:1}.hero h1{font-weight:700;font-size:clamp(40px,4.45vw,64px);letter-spacing:.02em;line-height:1.35;margin:0;white-space:nowrap;color:#385d8e}.hero-actions{display:flex;gap:14px;flex-wrap:wrap}.button{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:48px;padding:10px 24px;border-radius:999px;font-size:17px;line-height:1.4;transition:background-color .16s,color .16s,transform .16s}.button:hover{transform:translateY(-2px)}.button:active{transform:translateY(0)}.primary{background:#689bd8;color:#fff;border:1px solid #689bd8;box-shadow:0 6px 18px #7ba6db24}.primary:hover{background:#5389ca}.secondary{background:#ffffff70;border:1px solid #aac8ec;color:#507aaf}.secondary:hover{background:#e4effd}.hero-actions .button{min-width:178px}.portrait{margin:0;min-width:0;display:flex;align-items:center;justify-content:center;position:relative;z-index:1}.portrait img{display:block;width:100%;max-width:440px;height:auto;object-fit:contain}
.catalog{position:relative;z-index:3;width:calc(100% - 64px);max-width:1136px;margin:0 auto;padding:8px 0 48px}.search-tools{display:flex;gap:12px;align-items:center}.search-box{display:flex;gap:14px;align-items:center;border:1px solid #b6cfee;background:#ffffffb3;border-radius:999px;min-height:52px;padding:0 18px 0 22px;flex:1;min-width:0}.search-box>.icon{color:#6c8eb8;width:22px;height:22px}.search-box:focus-within{border-color:#7ba4d7;box-shadow:0 0 0 3px #84aee21a}.search-box input{background:transparent;border:0;outline:0;width:100%;min-width:0;height:50px;font-size:17px;appearance:none}.search-box input:focus-visible{outline:0}.search-box input::placeholder{color:#7387a5}.search-box input::-webkit-search-cancel-button{display:none}.icon-button{display:inline-flex;align-items:center;justify-content:center;min-width:40px;min-height:40px;background:transparent;color:#6c87aa;border-radius:50%}.icon-button:hover{background:#e0ecfa}.filter-button{min-height:52px;border:1px solid #b6cfee;background:#ffffff80;padding:10px 22px;font-size:16px;color:#567dad}.filter-button[aria-expanded=true]{background:#e2efff}.filter-button .icon{width:21px;height:21px}#filter-badge{font-size:12px;line-height:20px;min-width:20px;background:#6497d4;color:#fff;border-radius:50%}.filter-panel{display:flex;align-items:center;gap:22px;padding:20px 22px;background:#e9f2ff;border:1px solid #d4e3f5;border-radius:20px;margin-top:12px}.filter-panel label{display:flex;align-items:center;gap:12px;font-size:15px}.filter-panel select{background:#fff;border:1px solid #c4d8ed;border-radius:10px;min-height:40px;max-width:160px;padding:6px 32px 6px 12px;font-size:15px}.text-button{background:transparent;color:#4778b0;font-size:15px;min-height:40px;padding:6px 4px;text-decoration:underline;text-underline-offset:5px}#filter-done{margin-left:auto}.catalog-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);padding:20px 2px 12px}.catalog-heading h2{font-size:18px;font-weight:400;margin:0}#result-count{font-size:15px;color:var(--muted);font-variant-numeric:tabular-nums}.song-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));column-gap:32px}.song-row{display:flex;align-items:center;gap:14px;text-align:left;min-height:76px;border-radius:0;border-bottom:1px solid #dae6f3;background:transparent;padding:13px 12px 13px 8px;min-width:0;width:100%;transition:background-color .15s,color .15s}.song-row:hover{background:#dfedfc9c;color:#315f98}.song-info{min-width:0;flex:1}.song-name{display:block;font-size:18px;line-height:1.45;overflow-wrap:anywhere}.song-artist{display:block;color:#657d9f;font-size:13px;line-height:1.45;margin-top:3px;overflow-wrap:anywhere}.song-row>.icon{width:18px;height:18px;color:#7a98c0;margin-left:auto}.song-row.copied>.icon{color:#3c7f96}.list-sentinel{height:1px;pointer-events:none}.status-message{text-align:center;color:#617a9d;line-height:1.8;padding:50px 12px}.status-message p{margin-top:0}
dialog{color:var(--text);background:#f4f9ff;border:1px solid #b5cee9;border-radius:28px;padding:38px 32px 28px;width:min(480px,calc(100% - 32px));box-shadow:0 20px 90px #32577d30;max-height:calc(100dvh - 48px)}dialog::backdrop{background:#314e7859}.dialog-close{position:absolute;right:10px;top:10px}.dialog-label{font-size:14px;color:#6a85aa;margin:0 0 20px}dialog h2{font-weight:400;font-size:28px;line-height:1.5;margin:0 0 6px;overflow-wrap:anywhere}#dialog-song-detail{font-size:15px;color:#627d9f;margin:0}#request-preview{font-size:16px;background:#e7f0fc;border-radius:12px;padding:14px 16px;margin:24px 0}.dialog-actions{display:flex;gap:12px;flex-wrap:wrap}.dialog-actions .button{font-size:15px;padding:10px 18px}.dialog-live{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:22px;font-size:15px;color:#547cac}.dialog-live .icon{width:15px;height:15px}#manual-copy{margin:0 0 20px;font-size:14px;line-height:1.7}#manual-copy-text{display:block;width:100%;background:white;border:1px solid #b6cfee;border-radius:10px;padding:10px;margin-top:8px;resize:vertical}#toast{display:flex;align-items:center;gap:10px;position:fixed;bottom:max(28px,env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);z-index:10;background:#3a5c83;color:#fff;border:1px solid #ffffff50;border-radius:999px;padding:14px 22px;box-shadow:0 6px 24px #35598122;max-width:calc(100% - 32px);font-size:15px}#toast-message{overflow-wrap:anywhere}
@media(min-width:1500px){.hero-inner{min-height:540px}.portrait img{max-width:470px}}
@media(max-width:1000px){.hero-inner{min-height:450px;padding-inline:28px;gap:16px;grid-template-columns:1.15fr 1fr}.hero h1{font-size:clamp(32px,4.5vw,45px)}.hero-copy{padding-left:0}.hero-actions{gap:10px}.hero-actions .button{min-width:0;padding:10px 19px;font-size:15px}.song-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 28px}.catalog{width:calc(100% - 56px)}}
@media(max-width:680px){.hero-inner{display:flex;flex-direction:column;gap:0;min-height:0;padding:14px 20px 24px}.portrait{order:-1;width:min(100%,306px);margin:0 auto -2px}.portrait img{width:100%}.hero-copy{padding:0;text-align:center}.title-star{position:absolute;top:1px;left:-23px;margin:0;font-size:19px}.hero h1{font-size:clamp(30px,7.9vw,43px);letter-spacing:.01em;line-height:1.4}.hero-actions{justify-content:center;gap:12px}.hero-actions .button{font-size:15px;min-height:44px;padding:10px 20px}.hero-actions .icon{width:17px;height:17px}.catalog{width:calc(100% - 36px);padding-top:0}.search-tools{gap:8px}.search-box{padding-left:16px;padding-right:8px;gap:8px;min-height:48px}.search-box>.icon{width:20px;height:20px}.search-box input{font-size:15px;height:46px}.filter-button{font-size:14px;padding:10px 14px;gap:6px;min-height:48px}.filter-button .icon{width:18px;height:18px}.filter-panel{flex-wrap:wrap;gap:10px 18px;padding:14px}.filter-panel label{flex:1;min-width:112px;font-size:14px;gap:8px}.filter-panel select{width:100%;min-width:0;font-size:14px;padding-left:8px;padding-right:16px}.filter-panel .text-button{font-size:14px;min-height:34px}.catalog-heading{padding-top:20px}.catalog-heading h2{font-size:17px}#result-count{font-size:14px}.song-list{grid-template-columns:1fr;gap:0}.song-row{min-height:74px;padding:13px 10px 13px 4px}.song-name{font-size:18px}.song-artist{font-size:13px}.song-row>.icon{width:19px;height:19px}dialog{padding:34px 24px 24px}dialog h2{font-size:25px}#toast{border-radius:20px;padding:12px 18px;font-size:14px;width:max-content}}
@media(max-width:360px){.hero-inner{padding-top:10px}.portrait{max-width:260px}.hero-actions .button{padding:10px 15px;gap:8px}.catalog{width:calc(100% - 28px)}.title-star{left:-16px;font-size:15px}.filter-button{padding-inline:12px}.filter-button>.icon{display:none}}

/* Avoid accidental page selection and image dragging while preserving form editing. */
body{-webkit-user-select:none;user-select:none}
input,textarea{-webkit-user-select:text;user-select:text;-webkit-touch-callout:default}
img,svg{-webkit-user-drag:none;-webkit-touch-callout:none}

/* Searchable artist multi-select, with native checkboxes for touch and keyboard. */
.hero-backdrop{position:absolute;inset:0;overflow:clip;z-index:-2;pointer-events:none;mask-image:linear-gradient(#000 74%,transparent)}

.hero-light{position:absolute;inset:-20px;z-index:1;background:radial-gradient(ellipse at 73% 35%,#ffffffc9 0%,#b2d2f83b 26%,#d8eaff00 58%);will-change:transform,opacity;pointer-events:none}
.portrait{padding-block:24px;perspective:1000px}
.portrait img{position:relative;z-index:1;transform-origin:50% 55%;will-change:transform;backface-visibility:hidden}
.portrait-shadow-layer{position:absolute;inset:-12px -12px;overflow:clip;pointer-events:none;z-index:0;mask-image:radial-gradient(ellipse closest-side,#000 70%,transparent 100%)}
#portrait-shadow{position:absolute;left:50%;top:50%;pointer-events:none;z-index:0;will-change:transform;transform:translate(-50%,-50%)}
.title-star{width:1em;transform-origin:center;will-change:transform}
.hero-inner{animation:hero-arrive .65s ease-out both}
@keyframes hero-arrive{from{opacity:0}to{opacity:1}}
@media(max-width:680px){.portrait{margin-bottom:4px}}
.profile-link{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:48px;font-size:15px;color:#5278a7;padding:6px 4px;white-space:nowrap}
.profile-link .icon{width:15px;height:15px}
.profile-link:hover{text-decoration:underline;text-underline-offset:5px}
@media(max-width:680px){.hero-actions .profile-link{flex-basis:100%;min-height:36px;margin-top:-4px;padding:4px;font-size:14px}}
.filter-panel{display:grid;grid-template-columns:minmax(180px,1.5fr) repeat(2,minmax(110px,1fr)) auto auto;gap:18px;align-items:end;position:relative;z-index:4}
.filter-panel>label,.artist-filter{display:flex;flex-direction:column;align-items:stretch;gap:8px;min-width:0;font-size:14px}
.filter-panel>label select{width:100%;max-width:none}
.artist-picker{position:relative;min-width:0}
.artist-picker summary{display:flex;align-items:center;justify-content:space-between;gap:8px;list-style:none;cursor:pointer;min-height:40px;padding:7px 12px;border:1px solid #c4d8ed;border-radius:10px;background:#fff;font-size:15px}
.artist-picker summary::-webkit-details-marker{display:none}
.artist-picker summary:focus-visible{outline:3px solid #5b8ec7;outline-offset:4px}
#artist-summary{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.artist-picker summary .icon{width:16px;height:16px}
.artist-picker[open] summary{border-color:#7ba4d7}
.artist-popover{position:absolute;left:0;top:calc(100% + 8px);width:320px;max-width:calc(100vw - 64px);padding:14px;background:#f8fbff;border:1px solid #bed4ed;border-radius:16px;box-shadow:0 12px 30px #426a9820;z-index:5}
#artist-search{display:block;width:100%;min-height:42px;border:1px solid #c4d8ed;border-radius:10px;background:#fff;padding:8px 12px;font-size:16px;outline-offset:2px}
#artist-search::placeholder{color:#7387a5}
.artist-picker-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12px;color:#627a9d;padding:5px 2px}
.artist-picker-heading .text-button{font-size:12px;min-height:32px}
.artist-options{max-height:min(248px,36dvh);overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#adc7e6 transparent}
.filter-panel .artist-option{display:flex;flex-direction:row;align-items:center;gap:10px;min-width:0;min-height:42px;padding:8px 6px;border-radius:8px;cursor:pointer;font-size:15px}
.artist-option:hover{background:#e9f2ff}
.artist-option:has(input:checked){background:#e3effe}
.artist-option:has(input:disabled){opacity:.48;cursor:default}
.artist-option input{width:17px;height:17px;flex:0 0 17px;margin:0;accent-color:#5b8ec7;cursor:inherit}
.artist-option-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.artist-option-count{font-size:12px;color:#627a9d;flex-shrink:0}
.artist-empty{font-size:14px;text-align:center;padding:18px 0;margin:0;color:#627a9d}
.active-filters{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:14px 0 0}
.active-filters li{max-width:100%}
.filter-chip{display:inline-flex;align-items:center;gap:7px;max-width:100%;min-height:36px;padding:6px 10px 6px 13px;border:1px solid #c5daf2;border-radius:999px;background:#e7f1ff;color:#456d9e;font-size:13px;text-align:left}
.filter-chip:hover{background:#dceafb}
.filter-chip>span{overflow-wrap:anywhere}
.filter-chip .icon{width:14px;height:14px}
#filter-done{margin-left:0;justify-self:end}
@media(max-width:900px){.filter-panel{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 18px}.artist-filter{grid-column:1 / -1}.filter-panel>label{min-width:0}.artist-popover{width:360px}}
@media(max-width:680px){.filter-panel{gap:14px;padding:16px}.filter-panel>label select{padding-right:24px}.artist-popover{position:static;width:100%;max-width:none;box-shadow:none;margin-top:8px;padding:10px}.artist-options{max-height:210px}.active-filters{gap:6px;margin-top:12px}.filter-chip{font-size:12px;min-height:36px}.filter-panel>.text-button{justify-self:start}#filter-done{justify-self:end}}

/* A viewport scene continues behind the entire song list, independent of page length. */
body{position:relative}
main{position:relative;z-index:1}
.page-scene{position:fixed;inset:0;overflow:clip;pointer-events:none;z-index:0}
.page-art{position:absolute;inset:-42px;background-image:var(--page-art);background-size:cover;background-position:center 43%;opacity:.67;will-change:transform}
.page-scene::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,#f4f9ff1a,#f4f9ff40 22%,#f4f9ff1a 78%,#f4f9ff05);pointer-events:none}
.page-scene #particles{position:absolute;inset:0;width:100%;height:100%;z-index:1}
.catalog::before{content:'';position:absolute;inset:-14px -24px -10px;z-index:-1;border:1px solid #ffffffa8;border-radius:28px;background:#f4f9ffb3;box-shadow:0 12px 48px #6b8fb509;pointer-events:none}
.song-row{border-bottom-color:#b7cfe6a3}
@media(max-width:680px){.page-art{background-position:62% center}.catalog::before{inset:-12px -8px -8px;border-radius:22px;background:#f4f9ffb8}}

/* Poster composition: a clef and individually sized, staggered Chinese glyphs. */
.hero-titles{position:relative;width:max-content;max-width:100%}
.hero-titles h1{display:flex;align-items:center;gap:.10em;font-family:'Songbook Display',serif;font-weight:400;font-size:clamp(58px,6.1vw,88px);line-height:1;letter-spacing:0;color:#416395}
.title-clef{display:block;flex:none;width:auto;height:1.31em;transform:translateY(.03em)}
.title-letters{display:inline-flex;align-items:baseline;gap:0;line-height:1;padding-block:.18em .11em;white-space:nowrap}
.title-character{display:inline-block;flex:none;line-height:1;transform-origin:50% 75%}
.title-character:nth-child(6n+1){font-size:.98em;transform:translateY(.065em) rotate(-2deg)}
.title-character:nth-child(6n+2){font-size:.91em;margin-inline-start:-.035em;transform:translateY(-.075em) rotate(1.5deg)}
.title-character:nth-child(6n+3){font-size:1.16em;margin-inline-start:-.015em;transform:translateY(.015em) rotate(-1.5deg)}
.title-character:nth-child(6n+4){font-size:.70em;margin-inline:-.035em -.01em;transform:translateY(-.16em) rotate(1.5deg)}
.title-character:nth-child(6n+5){font-size:1.08em;transform:translateY(-.065em) rotate(-1deg)}
.title-character:nth-child(6n){font-size:1.02em;margin-inline-start:-.015em;transform:translateY(.075em) rotate(1.5deg)}
.hero-signature{font-family:'Songbook Signature',cursive;font-weight:400;font-size:clamp(31px,3.85vw,55px);line-height:1.25;color:#7fa6df;margin:-9px 0 0 8px;white-space:nowrap;transform:rotate(-3deg);transform-origin:20% center;position:relative;z-index:1}
.signature-flourish{position:absolute;bottom:2px;left:9px;width:96%;height:22px;pointer-events:none;color:#8eafe1;opacity:.55}
.signature-flourish path{stroke:currentColor;stroke-width:1;stroke-linecap:round}
.hero-titles+.hero-actions{margin-top:30px}
@media(max-width:1000px){.hero-titles h1{font-size:clamp(42px,6.7vw,64px)}.hero-signature{font-size:clamp(30px,4.4vw,43px);margin-left:3px}}
@media(max-width:680px){.hero-titles{margin-inline:auto}.hero-titles h1{justify-content:center;font-size:clamp(36px,12.8vw,52px)}.hero-signature{font-size:clamp(28px,8.4vw,35px);line-height:1.35;margin:-4px 0 0;transform-origin:center}.signature-flourish{left:0;bottom:0;width:100%;height:18px}.hero-titles+.hero-actions{margin-top:24px}}

/* Keep catalogue controls available while scrolling, without a page-wide header. */
html{scroll-padding-top:calc(var(--catalog-toolbar-height,80px) + 12px)}
.catalog{min-height:100svh;--catalog-surface:#f4f9ffb3;--catalog-border:#ffffffa8;--catalog-radius:28px;--catalog-outset:24px}
.catalog::before{background:var(--catalog-surface);border-color:var(--catalog-border);border-radius:var(--catalog-radius)}
.toolbar-anchor{height:1px;margin-bottom:-1px;pointer-events:none}
.catalog-toolbar{position:sticky;top:0;z-index:6;isolation:isolate;padding:12px 0}
.catalog-toolbar::before{content:'';position:absolute;inset:0 calc(-1 * var(--catalog-outset));z-index:-1;pointer-events:none}
.catalog-toolbar.is-stuck::before{border:1px solid var(--catalog-border);border-radius:var(--catalog-radius)}
.catalog-toolbar .filter-panel{position:absolute;inset-inline:0;top:100%;margin-top:8px;max-height:calc(min(100dvh,var(--controls-viewport-height,100dvh)) - var(--catalog-toolbar-height,80px) - 20px - env(safe-area-inset-bottom));overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;align-items:start;box-shadow:0 12px 30px #426a9820}
.catalog-toolbar .artist-popover{position:static;width:100%;max-width:none;margin-top:8px;box-shadow:none}
.catalog-toolbar .active-filters{flex-wrap:nowrap;overflow-x:auto;overscroll-behavior-inline:contain;scrollbar-width:thin;margin-top:10px;padding-bottom:2px}
.catalog-toolbar .active-filters li{flex:0 0 auto;max-width:min(100%,280px)}
.catalog-toolbar .filter-chip>span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.song-row{scroll-margin-top:calc(var(--catalog-toolbar-height,80px) + 12px)}

/* An actionable copy confirmation, with room for long song titles. */
#toast{display:grid;grid-template-columns:minmax(0,1fr) auto 44px;gap:12px;align-items:center;width:min(640px,calc(100% - 32px));max-width:calc(100% - 32px);padding:12px 12px 12px 18px;border-radius:22px;bottom:max(20px,env(safe-area-inset-bottom))}
.toast-copy{display:flex;align-items:center;gap:10px;min-width:0}
.toast-live{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:10px 14px;border:1px solid #ffffff70;border-radius:999px;background:#ffffff17;color:#fff;font-size:15px;white-space:nowrap}
.toast-live:hover{background:#ffffff2b}
.toast-live .icon{width:16px;height:16px}
#toast .toast-close{min-width:44px;min-height:44px;color:#e1efff}
#toast .toast-close:hover{background:#ffffff1f}
#toast a:focus-visible,#toast button:focus-visible{outline-color:#fff;outline-offset:2px}
@media(max-width:680px){
  .catalog{--catalog-surface:#f4f9ffb8;--catalog-radius:22px;--catalog-outset:8px}
  .catalog-toolbar{padding-top:max(10px,env(safe-area-inset-top));padding-bottom:10px}
  .catalog-toolbar .filter-panel{padding:16px;margin-top:6px;max-height:calc(min(100dvh,var(--controls-viewport-height,100dvh)) - var(--catalog-toolbar-height,76px) - 16px - env(safe-area-inset-bottom))}
  .catalog-toolbar .artist-options{max-height:min(210px,28dvh)}
  .catalog-toolbar .filter-chip{min-height:42px}
  #toast{grid-template-columns:minmax(0,1fr) 44px;gap:10px;width:calc(100% - 24px);max-width:calc(100% - 24px);padding:12px;border-radius:20px;bottom:max(12px,env(safe-area-inset-bottom));font-size:14px}
  .toast-copy{grid-column:1;grid-row:1}
  .toast-live{grid-column:1 / -1;grid-row:2;border-radius:12px}
  .toast-close{grid-column:2;grid-row:1;align-self:start}
}